Free: Contests & Raffles.
Baby wipes and bum showers. Bring some scent free soap, a gallon milk jug and a towel. Very refreshing every couple days. Scent free baby wipe bath before headin out every morning. Of course scent free spray too, I also like to use some natural stuff like pine and fir boughs. Don't wear your huntin clothes at camp, change before you leave and as soon as you get back.
ALWAYS hunt upwind...... Unless you're too tired to take are of a downed elk, in which case: ALWAYS hunt down wind.....
I pay ZERO attention to scent control and ALWAYS pay attention to the wind.